TOA Electronics SSDVT-4035CNM WARNING Never use an open ame to check for leaks.

NOTE: DIAGRAMS & ILLUSTRATIONS NOT TO SCALE.

Replace logs if removed for pilot inspection.

To light the burner; turn “ON” the remote wall

switch and rotate the gas valve control knob

counterclockwise to the “ON” position.

Figure 50

Proper Pilot Flame Appearance

Thermocouple

Thermopile

Pilot

Nozzels

1/8" Min.

(3 mm)

Igniter Rod

Hood

HONEYWELL MILLIVOLT PILOT ASSEMBLY

Figure 49

Thermocouple

Thermopile

Pilot

Nozzels

SIT MILLIVOLT PILOT ASSEMBLY

3/8" Min.

(9 mm)

Igniter Rod

Hood

Proper Pilot Flame Appearance

3/8" Min.

(9 mm)

TEST ALL CONNECTIONS FOR GAS LEAKS

(FACTORY AND FIELD):

WARNINGNever use an open ﬂ ame to check for leaks.

Turn on gas supply and test for gas leaks using a

gas leak test solution (also referred to as bubble

leak solution). Note: Using a soapy water solution

(50% dish soap, 50% water) is an effective leak

test solution but it is not recommended, because

the soap residue that is left on the pipes/ﬁ ttings

can result in corrosion over time.

A. Light the appliance (refer to the lighting

instructions label in control compartment or

homeowner's manual).

B. Brush all joints and connections with the gas

leak test solution to check for leaks. If bubbles

are formed, or gas odor is detected, turn the

gas control knob (off/pilot/on) to the “OFF”

position. Either tighten or refasten the leaking

connection, then retest as described above.

C. When the gas lines are tested and leak free be

sure to rinse off the leak testing solution,

D. Turn on burner then observe the individual

tongues of ﬂ ame on the burner. Make sure

all ports are open and producing ﬂ ame evenly

across the burner. If any ports are blocked, or

partially blocked, clean out the ports.

CONTROL COMPARTMENT ACCESS /

LOUVER PANEL INSTRUCTIONS

(Ref. Figure 47)

NOTE: The top louvered panel and the bottom

louvered control panel door remove and install

the same way as follows:

The gas controls can be found behind the control

compartment access door.

Removing Control Compartment Door:

Open the door by gently lifting it upward until the

hook catches on boths sides clear the locating

slots. Then pull door out to remove.

On millivolt systems, the piezo igniter, HI/LO

ﬂ ame adjustment knob, and pilot and main

gas OFF/ON control knob are located below

the glass panel enclosure. The gas valve for

electronic systems is also located below the

glass enclosure panel. See Figure 47.

Reinstalling Control Compartment Door:

To reinstall, insert the hook catches on each

side of the door into the corresponding slots

in the control compartment opening, then

gently push forward and slide down until it

locks in place.

Figure 48

Sit and Honeywell Millivolt Gas Valve

Showing Piezo Igniter Location (Each Unit is

Equipped with Only One of these Gas Valves)

Piezo

Igniter

SIT Gas Valve

Honeywell

Gas Valve

Step 7. CHECKING APPLIANCE OPERA-

TION

With the gas line installed, run initial system

checkout before closing up the front of the

appliance. Follow the pilot lighting instructions

provided in the Homeowner's Care and Opera-

tion Instructions. For piezo igniter location see

Figure 48 (millivolt appliances only).

Note: The (pull-out) Lighting instructions label

can be found in the control compartment

(see Figure 47).

When ﬁ rst lighting the appliance, it will take

a few minutes for the line to purge itself of

air. Once purging is complete, the pilot and

burner will light and operate as indicated in

the instruction manual. Subsequent lightings

of the appliance will not require such purging.

Inspect the pilot ﬂ ame.

SIT and Honeywell Millivolt Appliance

Checkout

The pilot ﬂ ame should be steady, not lifting

or ﬂ oating. Flame should be blue in color with

traces of orange at the outer edge.

The top 3/8" (10 mm) at the pilot generator

(thermopile) and the top 1/8" min (tip) of the

quick drop out thermocouple should be engulfed

in the pilot ﬂ ame. The ﬂ ame should project 1" (25

mm) beyond the hood at all three ports (Figure

49 - SIT, Figure 50 - Honeywell).

To light the burner; rotate the gas valve control

knob counterclockwise to the “ON” position

then turn “ON” the OFF/ON switch (installed

at Step 4).

Figure 47

OPENING CONTROL

COMPARTMENT DOOR

Control Valve

Lower Control

Compartment Door

Lift the Lower Control

Compartment Door

up and pull out to

remove.

Out

Hook Catch

Observe the individual tongues of ﬂ ame on

the burner. Make sure all ports are open and

producing ﬂ ame evenly across the burner. If

any ports are blocked, or partially blocked,

clean out the ports.